Epoxy Resin Composition Adhesion to Copper and Aluminum
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Solution Overview
Problem
Epoxy resin compositions exhibit poor adhesion to aluminum and copper substrates and lack flexibility in low-temperature environments, limiting their application in various industrial uses.
Innovation Solution
An epoxy resin composition comprising an epoxy resin and a polyamide-based rubber elastomer powder with a specific block copolymer structure, which provides excellent adhesion to copper and aluminum and maintains flexibility in low-temperature conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If conventional epoxy resin compositions are used, then mechanical strength and heat resistance are improved, but adhesion to aluminum and copper substrates deteriorates
Solution Approach 1:
The invention uses a composite material system combining epoxy resin with polyamide-based rubber elastomer particles. This composite approach allows the epoxy resin to provide mechanical strength and heat resistance while the polyamide-based rubber elastomer component provides excellent adhesion to aluminum and copper substrates, thereby resolving the contradiction between strength and adhesion performance.
Solution Approach 2:
The invention changes the chemical composition parameters of the epoxy resin system by incorporating polyamide-based rubber elastomer particles with specific structural characteristics. This parameter change enables the material to simultaneously achieve strong adhesion to poorly adhesive substrates like aluminum and copper while maintaining the inherent mechanical strength and heat resistance of epoxy resin.
2Stability of the object's composition
If conventional epoxy resin compositions are used, then structural stability is improved, but flexibility in low-temperature environments deteriorates
Solution Approach 1:
The invention modifies the physical and chemical parameters of the epoxy resin system by adding polyamide-based rubber elastomer particles. This parameter change introduces flexibility to the otherwise rigid epoxy network, enabling the material to maintain structural stability while adapting to low-temperature environments and preventing brittleness.
Solution Approach 2:
The polyamide-based rubber elastomer particles are distributed throughout the epoxy resin matrix, creating local flexible regions within the rigid structure. This local quality approach allows the material to maintain overall structural stability while providing localized flexibility that prevents cracking and maintains performance in low-temperature conditions.
Data Source
AI summary
There is provided an epoxy resin composition having excellent adhesion to copper and aluminum, and having excellent flexibility in a low-temperature environment. The epoxy resin composition comprises (A) an epoxy resin and (B) a polyamide-based rubber elastomer powder.